Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..
Ferns and their relatives are vascular plants, meaning they have xylem and phloem tissues. Because of the presence of va..
With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..
The human body is capable of regulating growth and energy balance through various feedback mechanisms. Get to know the e..
The gastrointestinal system breaks down particles of ingested food into molecular forms by enzymes through digestion and..